Adjustable forehead support screw for respiratory mask



FIG. 1 is a perspective view of a screw portion of a forehead support for a respiratory mask according to an embodiment of our design;

FIG. 2 is a rear view thereof;

FIG. 3 is a top view thereof; and,

FIG. 4 is a front view thereof.

Throughout the various figures of the drawings, certain views may not be provided. The omission of a particular view is intended to convey that the element(s) depicted is/are plain and unornamented in that omitted view, or that the particular ornamental appearance in that view is simply not claimed.

Where included, broken lines showing environment or structure are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for an adjustable forehead support screw for a respiratory mask, as shown and described. 